Which of the following nuclear RNA transport events requires the action of a guanine exchange factor (GEF)?
A. importin release of RNA in the nucleus
B. exportin release of RNA in the cytoplasm
C. importin binding of RNA in the cytoplasm
D. exportin binding of RNA in the nucleus
A
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Pattern recognition receptors (PRRs) are found on which of the following cells?
A) macrophages B) bacteria C) neutrophils D) macrophages and neutrophils
When Mendel crossed two plants that were heterozygous for a single trait, what was the genotypic ratio of their offspring?
A. 1:2:1 B. 9:3:3:1 C. 3:1 D. 1:1 E. Varied depending on the trait
Epithelial tissue is least likely to:
a. contract. b. be specialized as sensory receptors. c. provide protection. d. regulate exchange of substances between parts of the body. e. produce and secrete cell products
What distinguishes the mycoplasmas from others within Bacteria?
a. large size b. contain lipoteichoic acids c. lack of cell wall d. all of the above